Fredbeic hewitt



P. HEWITT. t PULLEY.l

No. 77,284. PatentedApf, 28, 1868x FREDERIG-HEWITT, OF NEWARK, `NEW JERSEY.

Letters Patent No. 7 7,284, dated April 28, 1868. I

IMPROVBMEN T. IN PULLEYS.

@hrteren rtfttret it inA that hitters @anni 'ma' mating ent t the ann.

To ALL WHOM 1r MAY coNcERN:

Be it known that I, EnEDERIG HEWIH, of Newark, in the county of Essex, und State of New Jerse have. irliventeddcertaipew and usefpl lImprovements in Pulleys and I do hereby declare that the following isyzi full, c ear, an exac escri tion o t e same reference bein Y of this specification ilwhichg had to the accompanying drawings, making a portion Figure 1 is a view of a pulley made according to my invention.

Figure 2 is a-transverse section of the same, taken at right angles to iig. 1.

Similar letters.. of reference indicate corresponding parts in both figures.

The object of this invention is tcenable the pulley to be attached to a shaft without removing the same from its bearings, thereby avoiding the labor and waste .of time incident to placing an additional ulle u o the shaft in the ordinary manner. I v p y p n' The invention consists in s pulley costructcdwith a divided hub und removable rim; and furthermore in the combination ofv wrought-iron arms and s divided rim with the' aforesaid divided hub, whereby not only, isl the desired object .eii'ectually secured, but whereby, furthermore, a very tight and strong pulley is obtained.

To enable others to understand the nature and construction of my invention, I will proeeedfto describe'it with reference to the drawings.-

A represents the main portion of the hub, which is cest upon the inner ends ot` the radial spokes or arms a each of the said arms being formed of two thicknesses oi. ilet or other suitably-shapedwrought-iron rods. Eacli ofthe-thicknesses of each spoke is.connected with the corresponding thicknessofthe most adjacent spoke by un arc-shaped. 'bar or portion, ax, formedA in one with the said thickness, except at one side of the pulley, at which such connectingportion ax is dividedby an opening, a. The rim B of the pulley is placed upon the arc-shaped connecting-portions ax, as shown morelclearly in g. l,`and.securcd thereto by screws orholts e. At a point nearlyv'or quite opposite the opening c, just mentioned, the rim B is cut or divided across, ns shown at 6X, in rder that when detached from the other portions oi' the p`ulley it may be sprung op'en and over the shaft on which the pulley isv to be placed, as hereinafter presently fully set forth. The hub is divided into or composed of two parts, the main or principal part, A, being formed with-an opening in one side, which -communicates withthe' lcentral-shaft slot e of the hub, and is of suiiicient size to permit the shaft on 4which the pulley is hto be secured -to be placed through the same laterally into the said shaft-slot. Fittedinto theiopening just described is the other part of the hub, formed of a block, A, secured in place either by screws e', passing` through suitable lugs formed thereon, or by keys or othervsuitable means, the said block, when thus in place, A

rendering the liub complete.

In order toattach the pulley to a shaft without removing the latter from its bearings, or detaching other pulleys therefrom, the rim B is removed from the 'arms a, or, in other words, from the connecting-portions ax thereof, and the block AX is taken from the opening in the other part, A, of the hub, thus enabling the latterv to be pla-ced upon the shaft to which it is. designed to attach the pulley, with the said shaft Yin its central-shaft A' slot e, as just hereinbe'ore indicated, whereupon the block AX is again secured in its place, thus irmly'securing the hub, with its attached arms, to the shaft, which, being done, the rim B is sprung apart at 11X, and slipped over the shaft, and then bolted or fastened to the connecting'porticns of thearms, as'bereinbefore fully described, thus completing the putting together of the pulley andthe securingthereof upon theshaft.

Although I prefer to make thel arms ci' wrought iron, it is practicable to cast them in a piece with the main portion ofthe hub. i

What I claim as my invention, and desire to secure by Letters Patent, is-

`1. The pulley, constructed with the divided hub nnd the detachable rim, substantially as herein set forth, for the purpose specified.

2. The combination of the divided rim, the wroughteiron arms formed with connectingfpnrts ax, and the divided hub, substantially as herein set forth, for the purpose specified.

- FREDERIC HEWITT.

Witnesses:

' A. LE Online, j

J. Banner. v 

